QuestionQ18

Communications and Network Security

Which port number does the HTTPS protocol use for secure web transmission?

  • A 8080
  • B 21
  • C 110
  • D 443
  • E 80
  • F 25
Explanation

HTTPS layers HTTP traffic over TLS/SSL encryption, and by IANA standard assignment, this secured web traffic is transmitted over TCP port 443. This differs from plain HTTP, which uses port 80.

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